yum install wget gcc -y

yum install -y zlib-devel openssl-devel 

yum install pam-devel libselinux-devel zlib-devel openssl-devel -y 

# CentOS7安装openssl

https://abc.htmltoo.com/thread-45048.htm

https://openbsd.hk/pub/OpenBSD/OpenSSH/portable/

https://ftp.openssl.org/source/

wget  https://openbsd.hk/pub/OpenBSD/OpenSSH/portable/openssh-8.6p1.tar.gz

-删除低版本OpenSSH的的rpm包

rpm -e --nodeps `rpm -qa | grep openssh` 

tar -zxvf openssh-8.6p1.tar.gz

cd openssh-8.6p1

可能文件默认显示uid和gid数组都是1000，这里重新授权下。不授权可能也不影响安装

chown -R root.root /data/tools/openssh-8.0p1

./configure --prefix=/usr/ --sysconfdir=/etc/ssh  --with-ssl-dir=/usr/local/lib64 --with-zlib   --with-md5-passwords   --with-pam --with-ssl-engine --with-selinux --with-ipaddr-display

make && make install

cp ssh_config sshd_config /etc/ssh

chmod 600 /etc/ssh/ssh_host_rsa_key /etc/ssh/ssh_host_ecdsa_key /etc/ssh/ssh_host_ed25519_key

cp -a contrib/redhat/sshd.init  /etc/init.d/sshd

cp -a contrib/redhat/sshd.pam /etc/pam.d/sshd.pam

chmod u+x /etc/init.d/sshd

vim /etc/ssh/sshd_config 

PermitRootLogin yes

PasswordAuthentication yes

chkconfig --add sshd

chkconfig sshd on

sed -i 's/SELINUX=enforcing/SELINUX=disabled/' /etc/selinux/config

setenforce 0

systemctl restart sshd

ssh -V

openssl version